The correct option is D Ag2SO4
The solubility of a compound depends upon its hydration enthalpy. If hydration enthalpy exceeds the lattice enthalpy then it is soluble in water.
Most of the silver salts are insoluble except AgF, AgClO4, AgNO3.
So, Ag2SO4 is insoluble in water as its hydration enthalpy is lower than lattice enthalpy.